Direct observation and quantification of grain boundary shear-migration coupling in polycrystalline Al

被引:57
作者
Mompiou, F. [1 ]
Legros, M. [1 ]
Caillard, D. [1 ]
机构
[1] CEMES CNRS, F-31055 Toulouse, France
关键词
INSITU OBSERVATIONS; MOTION; DEFORMATION; TRANSLATION; BEHAVIOR; KINETICS; FILMS; MODEL;
D O I
10.1007/s10853-011-5369-z
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Rapid grain boundary motion under stress has been observed during in-situ TEM straining experiment in polycrystalline Al at moderate temperatures. Crystallographic orientation of both sides of moving grain boundaries (GBs) was simultaneously recorded. A shear produced by the grain boundary migration has been estimated using fiducial markers and image correlation yielding a coupling factor (i.e., ratio of the shear strain over the migration distance) of around 7%. This result is compared to existing models based on shear coupled migration theories, and is discussed within the new Shear Migration Geometrical model (SMIG).
引用
收藏
页码:4308 / 4313
页数:6
相关论文
共 17 条
[1]   GRAIN-BOUNDARY KINETICS .2. INSITU OBSERVATIONS OF THE ROLE OF GRAIN-BOUNDARY DISLOCATIONS IN HIGH-ANGLE BOUNDARY MIGRATION [J].
BABCOCK, SE ;
BALLUFFI, RW .
ACTA METALLURGICA, 1989, 37 (09) :2367-2376
[2]   GRAIN-BOUNDARY KINETICS .1. INSITU OBSERVATIONS OF COUPLED GRAIN-BOUNDARY DISLOCATION-MOTION, CRYSTAL TRANSLATION AND BOUNDARY DISPLACEMENT [J].
BABCOCK, SE ;
BALLUFFI, RW .
ACTA METALLURGICA, 1989, 37 (09) :2357-2365
[3]  
BILBY BA, 1955, BRIST C REP DEF CRYS
[4]   Coupling grain boundary motion to shear deformation [J].
Cahn, John W. ;
Mishin, Yuri ;
Suzuki, Akira .
ACTA MATERIALIA, 2006, 54 (19) :4953-4975
[5]   A unified approach to motion of grain boundaries, relative tangential translation along grain boundaries, and grain rotation [J].
Cahn, JW ;
Taylor, JE .
ACTA MATERIALIA, 2004, 52 (16) :4887-4898
[6]   Grain-boundary shear-migration coupling. II. Geometrical model for general boundaries [J].
Caillard, D. ;
Mompiou, F. ;
Legros, M. .
ACTA MATERIALIA, 2009, 57 (08) :2390-2402
[7]  
FRANCK FC, 1950, S PLASTIC DEFORMATIO
[8]   SLIDING BEHAVIOR OF COINCIDENCE GRAIN-BOUNDARIES DEVIATING FROM IDEAL SYMMETRICAL TILT RELATIONSHIP [J].
FUKUTOMI, H ;
ISEKI, T ;
ENDO, T ;
KAMIJO, T .
ACTA METALLURGICA ET MATERIALIA, 1991, 39 (07) :1445-1448
[9]   Stress-assisted discontinuous grain growth and its effect on the deformation behavior of nanocrystalline aluminum thin films [J].
Gianola, D. S. ;
Van Petegem, S. ;
Legros, M. ;
Brandstetter, S. ;
Van Swygenhoven, H. ;
Hemker, K. J. .
ACTA MATERIALIA, 2006, 54 (08) :2253-2263
[10]   Stress-driven migration of symmetrical ⟨1 0 0⟩ tilt grain boundaries in Al bicrystals [J].
Gorkaya, Tatiana ;
Molodov, Dmitri A. ;
Gottstein, Guenter .
ACTA MATERIALIA, 2009, 57 (18) :5396-5405